PLATE CCXII 



Second Left Metacarpal of the Type of Brontops robustus Marsh 

 Plate prepared under the direction of Professor Marsh. One-half natural size. (See p. 668) 



1, Anterior view; la, section of point indicated by dotted line; 2, medial or inner view (radial side) ; 3, posterior view; 4, lateral 

 or outer view (ulnar side); 4a, outline of section at point indicated by dotted line; 5, proximal end; 6, distal end. m, Facet 

 for articulation with magnum; mcIII, facet for articulation with third metacarpal; ph, facet for articulation with first 

 phalanx; s, facet for articulation with sesamoid; td, facet for articulation with trapezoid. The principal ligamentous and 

 muscular attachments of this element are given on pages 716, 717. 



